The models who promoted Fyre Festival may have to reveal information about the payments they received.

Fyre Media founder Billy McFarland managed to spend $11.3 million USD in the lead up to the doomed music festival and the trustee investigating Fyre's bankruptcy wants to know exactly where all that cash went.

Trustee Gregory Messer has asked a judge to subpoena the models and social media influencers responsible for promoting Fyre in the extravagant video promo, and on their Instagram Pages, Billboard reports.

Bella Hadid appeared in the Fyre promo video (YouTube).

Messer is attempting to subpoena IMG Models, the agency that has Fyre promoters Bieber, Hadid and Elsa Hosk on its books -- claiming that IMG received $1.2 million USD from McFarland in late 2016, early 2017.

He's also investigating the reported $250,000 USD that Jenner received for a single Instagram post promoting Fyre, and a further $299,00 USD paid to DNA Models for Emily Ratajkowski's appearance fee.

Jerry Media -- the social media behemoth that promoted Fyre -- is also facing a subpoena for a payment of $90k -- however, a rep for the company said they only received $30,000.